How to set parameters of orthographic camera to see only a specified plane
You can create a macro with the following steps for each plane:


set plane as active object.
bpy.ops.view3d.view_axis(type='TOP', align_active=True)
bpy.ops.view3d.camera_to_view()
bpy.ops.view3d.camera_to_view_selected()
if needed, change your render resolution to the same dimensions of the plane.